{"id":15171,"date":"2026-05-07T20:00:00","date_gmt":"2026-05-07T12:00:00","guid":{"rendered":"https:\/\/www.xintaivalves.com\/?p=15171"},"modified":"2026-05-15T08:54:22","modified_gmt":"2026-05-15T00:54:22","slug":"what-difference-metal-vs-resilient-seated-valves","status":"publish","type":"post","link":"https:\/\/www.xintaivalves.com\/pt\/blog\/butterfly-valve\/what-difference-metal-vs-resilient-seated-valves\/","title":{"rendered":"V\u00e1lvula Borboleta com Assento Met\u00e1lico vs. V\u00e1lvulas com Assento El\u00e1stico: Um Guia para Compradores B2B"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_86 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u00cdndice<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Alternar \u00edndice de conte\u00fado\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Alternar<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewbox=\"0 0 24 24\" version=\"1.2\" baseprofile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 eztoc-toggle-hide-by-default' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.xintaivalves.com\/pt\/blog\/butterfly-valve\/what-difference-metal-vs-resilient-seated-valves\/#Defining_a_Metal_Seated_Butterfly_Valve\" >Definindo uma V\u00e1lvula Borboleta com Assento Met\u00e1lico<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.xintaivalves.com\/pt\/blog\/butterfly-valve\/what-difference-metal-vs-resilient-seated-valves\/#Key_Features_of_Metal_Seated_Valve\" >Principais Caracter\u00edsticas da V\u00e1lvula com Assento Met\u00e1lico<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.xintaivalves.com\/pt\/blog\/butterfly-valve\/what-difference-metal-vs-resilient-seated-valves\/#Advantages_of_Metal_Seated_Valve\" >Vantagens da V\u00e1lvula com Assento Met\u00e1lico<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.xintaivalves.com\/pt\/blog\/butterfly-valve\/what-difference-metal-vs-resilient-seated-valves\/#Disadvantages_of_Metal_Seated_Valve\" >Desvantagens da V\u00e1lvula com Assento Met\u00e1lico<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.xintaivalves.com\/pt\/blog\/butterfly-valve\/what-difference-metal-vs-resilient-seated-valves\/#Typical_Applications\" >Aplica\u00e7\u00f5es t\u00edpicas<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.xintaivalves.com\/pt\/blog\/butterfly-valve\/what-difference-metal-vs-resilient-seated-valves\/#Resilient_Seated_Butterfly_Valve_and_its_Specifications\" >V\u00e1lvula Borboleta com Assento El\u00e1stico e suas Especifica\u00e7\u00f5es<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.xintaivalves.com\/pt\/blog\/butterfly-valve\/what-difference-metal-vs-resilient-seated-valves\/#Key_Features_of_Resilient_Seated_Butterfly_Valve\" >Principais Caracter\u00edsticas da V\u00e1lvula Borboleta com Assento El\u00e1stico<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.xintaivalves.com\/pt\/blog\/butterfly-valve\/what-difference-metal-vs-resilient-seated-valves\/#Advantages_of_Resilient_Seated_Valve\" >Vantagens da V\u00e1lvula com Assento El\u00e1stico<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.xintaivalves.com\/pt\/blog\/butterfly-valve\/what-difference-metal-vs-resilient-seated-valves\/#Disadvantages_of_Resilient_Seated_Valve\" >Desvantagens da V\u00e1lvula com Assento El\u00e1stico<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.xintaivalves.com\/pt\/blog\/butterfly-valve\/what-difference-metal-vs-resilient-seated-valves\/#Typical_Applications-2\" >Aplica\u00e7\u00f5es t\u00edpicas<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.xintaivalves.com\/pt\/blog\/butterfly-valve\/what-difference-metal-vs-resilient-seated-valves\/#Metal_Seated_vs_Resilient_Seated_Valves_Direct_Comparison\" >V\u00e1lvulas com Assento Met\u00e1lico vs. V\u00e1lvulas com Assento El\u00e1stico: Compara\u00e7\u00e3o Direta<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-12\" href=\"https:\/\/www.xintaivalves.com\/pt\/blog\/butterfly-valve\/what-difference-metal-vs-resilient-seated-valves\/#Conclusion\" >Conclus\u00e3o<\/a><\/li><\/ul><\/nav><\/div>\n\n<p class=\"wp-block-paragraph\">V\u00e1lvulas borboleta com assento met\u00e1lico e v\u00e1lvulas com assento el\u00e1stico t\u00eam suas pr\u00f3prias especifica\u00e7\u00f5es e aplica\u00e7\u00f5es.\u00a0<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Se voc\u00ea \u00e9 um comprador B2B querendo evitar perdas financeiras, certifique-se de escolher v\u00e1lvulas compat\u00edveis para o seu projeto.&nbsp;&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A <a href=\"https:\/\/www.xintaivalves.com\/pt\/products\/centerline-wafer-type-butterfly-valve\/\" target=\"_blank\" rel=\"noreferrer noopener\">v\u00e1lvula borboleta com assento el\u00e1stico<\/a> oferece veda\u00e7\u00e3o estanque, baixo torque de opera\u00e7\u00e3o a custos econ\u00f4micos em sistemas de \u00e1gua limpa e baixa press\u00e3o. Consequentemente, uma v\u00e1lvula com assento met\u00e1lico pode lidar com linhas de vapor de alta temperatura e meios abrasivos.\u00a0<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">A maioria dos fabricantes de v\u00e1lvulas fornece um <strong>manual de v\u00e1lvula borboleta com assento el\u00e1stico. <\/strong>Isso abrange valores de torque de instala\u00e7\u00e3o, classifica\u00e7\u00f5es de press\u00e3o e tabelas de compatibilidade de elast\u00f4meros. A revis\u00e3o desta documenta\u00e7\u00e3o ajuda as equipes de compras a adequar a v\u00e1lvula \u00e0s condi\u00e7\u00f5es reais do local.&nbsp;<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Este artigo explora as diferen\u00e7as entre v\u00e1lvulas com sede met\u00e1lica e v\u00e1lvulas com sede resiliente. Ele tamb\u00e9m destaca as principais diferen\u00e7as, vantagens, desvantagens e aplica\u00e7\u00f5es comuns para ajudar as equipes de compras a decidir qual tipo de v\u00e1lvula usar.\u00a0<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Defining_a_Metal_Seated_Butterfly_Valve\"><\/span>Definindo um <a href=\"https:\/\/www.xintaivalves.com\/pt\/blog\/metal-seated-valves-in-harsh-environments\/\" target=\"_blank\" data-type=\"link\" data-id=\"https:\/\/www.xintaivalves.com\/blog\/metal-seated-valves-in-harsh-environments\/\" rel=\"noreferrer noopener\">V\u00e1lvula Borboleta com Sede Met\u00e1lica<\/a><span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"512\" src=\"https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/05\/Defining-a-Metal-Seated-Butterfly-Valve-1024x512.webp\" alt=\"Um diagrama de uma v\u00e1lvula com assento met\u00e1lico e suas especifica\u00e7\u00f5es\" class=\"wp-image-15172\" srcset=\"https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/05\/Defining-a-Metal-Seated-Butterfly-Valve-1024x512.webp 1024w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/05\/Defining-a-Metal-Seated-Butterfly-Valve-300x150.webp 300w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/05\/Defining-a-Metal-Seated-Butterfly-Valve-768x384.webp 768w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/05\/Defining-a-Metal-Seated-Butterfly-Valve-18x9.webp 18w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/05\/Defining-a-Metal-Seated-Butterfly-Valve.webp 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Uma v\u00e1lvula com sede met\u00e1lica usa contato direto metal-metal entre o disco e a sede para criar o fechamento. Ambas as superf\u00edcies de veda\u00e7\u00e3o s\u00e3o usinadas com precis\u00e3o a partir de materiais met\u00e1licos como a\u00e7o inoxid\u00e1vel, ligas duras ou ligas de cobre. A precis\u00e3o do ajuste entre essas superf\u00edcies determina a qualidade da veda\u00e7\u00e3o.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Key_Features_of_Metal_Seated_Valve\"><\/span>Principais Caracter\u00edsticas da V\u00e1lvula com Assento Met\u00e1lico<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Seu <strong>mecanismo de veda\u00e7\u00e3o<\/strong> \u00e9 um contato metal-metal entre o disco e a sede.\u00a0<\/li>\n\n\n\n<li>O <strong>materiais do corpo e da sede<\/strong> s\u00e3o feitos de a\u00e7o inoxid\u00e1vel (CF8, CF8M), ligas com face dura ou a\u00e7o carbono.<\/li>\n\n\n\n<li>As v\u00e1lvulas s\u00e3o compat\u00edveis com configura\u00e7\u00f5es de gaveta em cunha e gaveta paralela.<\/li>\n\n\n\n<li>A temperatura operacional da v\u00e1lvula pode suportar at\u00e9 425\u00b0C (800\u00b0F) para corpos de a\u00e7o carbono de acordo com a ASME B16.34.<\/li>\n\n\n\n<li>Dependendo da classe da v\u00e1lvula, sua classifica\u00e7\u00e3o de press\u00e3o \u00e9 de at\u00e9 2.500\u20135.000 psi.<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Advantages_of_Metal_Seated_Valve\"><\/span>Vantagens da V\u00e1lvula com Assento Met\u00e1lico<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>As v\u00e1lvulas podem suportar temperaturas extremas e condi\u00e7\u00f5es de tubula\u00e7\u00e3o de alta press\u00e3o.\u00a0<\/li>\n\n\n\n<li>Elas s\u00e3o resistentes ao desgaste e podem lidar com <a href=\"https:\/\/www.xintaivalves.com\/pt\/blog\/best-valves-for-slurry-applications\/\" target=\"_blank\" data-type=\"link\" data-id=\"https:\/\/www.xintaivalves.com\/blog\/best-valves-for-slurry-applications\/\" rel=\"noreferrer noopener\">m\u00eddia abrasiva<\/a>, fluxo de lama e fluidos carregados de part\u00edculas.<\/li>\n\n\n\n<li>Eles t\u00eam uma longa vida \u00fatil mesmo em ambientes qu\u00edmicos corrosivos usando assentos SS316 ou Alloy 20.<\/li>\n\n\n\n<li>Eles s\u00e3o fluidos adequados contendo part\u00edculas s\u00f3lidas ou material fibroso.<\/li>\n\n\n\n<li>Eles t\u00eam desempenho de veda\u00e7\u00e3o est\u00e1vel sob ciclos t\u00e9rmicos repetidos.<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Disadvantages_of_Metal_Seated_Valve\"><\/span>Desvantagens da V\u00e1lvula com Assento Met\u00e1lico<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>As v\u00e1lvulas com assento met\u00e1lico t\u00eam custos de fabrica\u00e7\u00e3o e material mais altos em compara\u00e7\u00e3o com os tipos com assento resiliente.\u00a0<\/li>\n\n\n\n<li>As v\u00e1lvulas requerem usinagem de precis\u00e3o e servi\u00e7os de veda\u00e7\u00e3o. Isso significa maior manuten\u00e7\u00e3o.\u00a0<\/li>\n\n\n\n<li>Eles requerem um torque operacional de sauda\u00e7\u00e3o para abrir e fechar a v\u00e1lvula.\u00a0<\/li>\n\n\n\n<li>O assento do corpo da v\u00e1lvula e o port\u00e3o requerem reparo simult\u00e2neo quando as superf\u00edcies de veda\u00e7\u00e3o se desgastam.\u00a0<\/li>\n\n\n\n<li>Pode ocorrer vazamento menor em condi\u00e7\u00f5es de baixa press\u00e3o devido a micro-irregularidades na superf\u00edcie met\u00e1lica.\u00a0<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Typical_Applications\"><\/span>Aplica\u00e7\u00f5es t\u00edpicas<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">V\u00e1lvulas com assento met\u00e1lico s\u00e3o normalmente usadas nas seguintes aplica\u00e7\u00f5es:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Usinas de gera\u00e7\u00e3o de energia com linhas de vapor superaquecido e sistemas de \u00e1gua de alimenta\u00e7\u00e3o de caldeiras.\u00a0<\/li>\n\n\n\n<li>Oleodutos e gasodutos com petr\u00f3leo bruto, produtos refinados e linhas de transmiss\u00e3o de g\u00e1s.<\/li>\n\n\n\n<li>Minera\u00e7\u00e3o e transporte de lama, onde m\u00eddias abrasivas carregadas de part\u00edculas passam sob press\u00e3o.<\/li>\n\n\n\n<li>Plantas petroqu\u00edmicas com fluidos de processo de alta temperatura acima de 200\u00b0C.<\/li>\n\n\n\n<li>Sistemas industriais classificados acima da classe de press\u00e3o PN16 (16 bar) conforme EN 1092.<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Resilient_Seated_Butterfly_Valve_and_its_Specifications\"><\/span>V\u00e1lvula Borboleta com Assento El\u00e1stico e suas Especifica\u00e7\u00f5es<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"512\" src=\"https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/05\/Resilient-Seated-Butterfly-Valve-and-its-Specifications-1024x512.webp\" alt=\"Um diagrama de uma v\u00e1lvula com assento resiliente e suas especifica\u00e7\u00f5es\" class=\"wp-image-15173\" srcset=\"https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/05\/Resilient-Seated-Butterfly-Valve-and-its-Specifications-1024x512.webp 1024w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/05\/Resilient-Seated-Butterfly-Valve-and-its-Specifications-300x150.webp 300w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/05\/Resilient-Seated-Butterfly-Valve-and-its-Specifications-768x384.webp 768w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/05\/Resilient-Seated-Butterfly-Valve-and-its-Specifications-18x9.webp 18w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/05\/Resilient-Seated-Butterfly-Valve-and-its-Specifications.webp 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Uma v\u00e1lvula com assento resiliente, ou v\u00e1lvula com assento macio, usa um revestimento de borracha ou elast\u00f4mero no port\u00e3o ou disco para obter a veda\u00e7\u00e3o. O material flex\u00edvel se deforma ligeiramente sob a for\u00e7a de fechamento. Ele preenche as irregularidades da superf\u00edcie e oferece uma veda\u00e7\u00e3o herm\u00e9tica em conformidade com os padr\u00f5es API 598 de vazamento zero para testes de l\u00edquidos e gases.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Os elast\u00f4meros mais comuns s\u00e3o EPDM (Etileno Propileno Dieno Mon\u00f4mero) e NBR (Borracha de Nitrila Butadieno). O EPDM \u00e9 adequado para aplica\u00e7\u00f5es em \u00e1gua, esgoto e expostas ao ar livre. O NBR tem melhor desempenho com meios \u00e0 base de \u00f3leo ou em contato com petr\u00f3leo.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Key_Features_of_Resilient_Seated_Butterfly_Valve\"><\/span>Principais Caracter\u00edsticas da V\u00e1lvula Borboleta com Assento El\u00e1stico<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>A v\u00e1lvula com sede resiliente utiliza borracha EPDM ou NBR nos contatos da gaveta ou disco como mecanismo de veda\u00e7\u00e3o para o anel de sede met\u00e1lico.<\/li>\n\n\n\n<li>A gaveta e o corpo da v\u00e1lvula s\u00e3o feitos de ferro fundido d\u00factil (EN-GJS-500-7) ou ferro fundido cinzento.<\/li>\n\n\n\n<li>Um triplo anel O com um anel de poeira na parte superior \u00e9 usado para veda\u00e7\u00e3o de vapor.\u00a0<\/li>\n\n\n\n<li>A temperatura de opera\u00e7\u00e3o \u00e9 limitada a \u226480\u00b0C para servi\u00e7o cont\u00ednuo.<\/li>\n\n\n\n<li>A classifica\u00e7\u00e3o de press\u00e3o da v\u00e1lvula \u00e9 de PN6 a PN16\/PN25 (at\u00e9 25 bar) de acordo com ISO 7259 e EN 1074.<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Advantages_of_Resilient_Seated_Valve\"><\/span>Vantagens da V\u00e1lvula com Assento El\u00e1stico<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>As v\u00e1lvulas alcan\u00e7am veda\u00e7\u00e3o consistente, sem vazamentos, a cada fechamento.\u00a0<\/li>\n\n\n\n<li>As v\u00e1lvulas possuem baixo torque de opera\u00e7\u00e3o, o que as torna mais f\u00e1ceis de acionar. Portanto, reduzindo o dimensionamento do operador de engrenagem ou atuador.\u00a0<\/li>\n\n\n\n<li>O corpo da v\u00e1lvula \u00e9 projetado sem ranhuras inferiores. Assim, n\u00e3o haver\u00e1 ac\u00famulo de sedimento na sede.\u00a0<\/li>\n\n\n\n<li>O revestimento de resina ep\u00f3xi n\u00e3o \u00e9 t\u00f3xico e est\u00e1 em conformidade com os padr\u00f5es de \u00e1gua pot\u00e1vel.\u00a0<\/li>\n\n\n\n<li>Durante a manuten\u00e7\u00e3o de rotina, <a href=\"https:\/\/www.xintaivalves.com\/pt\/product\/\" target=\"_blank\" rel=\"noreferrer noopener\">a substitui\u00e7\u00e3o da v\u00e1lvula borboleta com sede resiliente<\/a> n\u00e3o requer desmontagem completa.\u00a0<\/li>\n\n\n\n<li>Quando o elast\u00f4mero atinge o fim de sua vida \u00fatil, <strong>a substitui\u00e7\u00e3o da v\u00e1lvula borboleta com sede resiliente <\/strong>envolve a troca do conjunto da gaveta ou disco. Isso reduz os custos de manuten\u00e7\u00e3o programada e encurta o tempo de parada da tubula\u00e7\u00e3o.<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Disadvantages_of_Resilient_Seated_Valve\"><\/span>Desvantagens da V\u00e1lvula com Assento El\u00e1stico<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<ol class=\"wp-block-list\">\n<li>A borracha degrada em temperaturas acima de aproximadamente 80\u00b0C quando exposta continuamente.\u00a0<\/li>\n\n\n\n<li>As v\u00e1lvulas desgastam-se facilmente em meios que cont\u00eam areia, cascalho ou s\u00f3lidos abrasivos.<\/li>\n\n\n\n<li>N\u00e3o s\u00e3o adequadas para sistemas de alta press\u00e3o acima de PN25, onde a deforma\u00e7\u00e3o do elast\u00f3mero se torna um risco.<\/li>\n\n\n\n<li>Nem todos os elast\u00f3meros resistem a \u00e1cidos concentrados ou solventes. Portanto, a compatibilidade qu\u00edmica deve ser verificada.\u00a0<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Typical_Applications-2\"><\/span>Aplica\u00e7\u00f5es t\u00edpicas<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">As v\u00e1lvulas com sede resiliente s\u00e3o comuns nas seguintes aplica\u00e7\u00f5es:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Como s\u00e3o certificadas para \u00e1gua pot\u00e1vel sob WRAS e NSF\/ANSI 61, s\u00e3o recomendadas para a distribui\u00e7\u00e3o de \u00e1gua municipal.<\/li>\n\n\n\n<li>Sistemas de tratamento de \u00e1guas residuais e de esgotos.<\/li>\n\n\n\n<li>Redes de irriga\u00e7\u00e3o e abastecimento de \u00e1gua agr\u00edcola.<\/li>\n\n\n\n<li>Se cumprirem os requisitos UL\/FM de acordo com a NFPA 13, podem ser utilizadas em sistemas de prote\u00e7\u00e3o contra inc\u00eandios.\u00a0<\/li>\n\n\n\n<li>Servi\u00e7os mec\u00e2nicos de edif\u00edcios com distribui\u00e7\u00e3o de AVAC e canaliza\u00e7\u00e3o.\u00a0<\/li>\n\n\n\n<li>No processamento de alimentos e farmac\u00eautico, est\u00e3o dispon\u00edveis graus de elast\u00f3mero compat\u00edveis com a FDA.\u00a0<\/li>\n<\/ol>\n\n\n\n<style>\n  .hero-card {\n    display: flex;\n    flex-wrap: wrap;\n    align-items: center;\n    background: #f7f8fa;\n    border-radius: 16px;\n    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.05);\n    padding: 24px;\n    max-width: 900px;\n    margin: 40px auto;\n    font-family: Arial, sans-serif;\n    text-decoration: none;\n    color: inherit;\n    font-family: 'Poppins';\n    transition: transform 0.2s ease-in-out;\n  }\n\n  .hero-card:hover {\n    transform: translateY(-2px);\n  }\n\n  .hero-image {\n    width: 220px;\n    height: auto;\n    border-radius: 12px;\n    object-fit: cover;\n    flex-shrink: 0;\n  }\n\n  .hero-content {\n    padding-left: 24px;\n    flex: 1;\n    min-width: 260px;\n  }\n\n  .hero-title {\n    font-size: 1.6rem;\n    font-weight: bold;\n    margin-bottom: 12px;\n    color: #222;\n    font-family: 'Poppins';\n  }\n\n  .hero-description {\n    font-size: 1rem;\n    color: #555;\n    margin-bottom: 18px;\n    line-height: 1.5;\n  }\n\n  .hero-link {\n    display: inline-block;\n    padding: 10px 20px;\n    background-color: #D70C19;\n    color: #fff;\n    text-decoration: none;\n    border-radius: 8px;\n    font-weight: bold;\n    transition: background 0.2s ease-in-out;\n  }\n\n  .hero-link:hover {\n    background-color: #b30a15;\n  }\n\n  @media (max-width: 640px) {\n    .hero-card {\n      flex-direction: column;\n      text-align: center;\n    }\n\n    .hero-content {\n      padding-left: 0;\n      padding-top: 20px;\n    }\n\n    .hero-image {\n      width: 100%;\n      max-width: 280px;\n    }\n  }\n<\/style>\n\n<a class=\"hero-card\" href=\"https:\/\/www.xintaivalves.com\/pt\/products\/centerline-wafer-type-butterfly-valve\/\" target=\"_blank\" rel=\"noopener\">\n  <img decoding=\"async\" class=\"hero-image\" src=\"https:\/\/xintaivalves.com\/wp-content\/uploads\/2022\/02\/%E6%9C%AA%E6%A0%87%E9%A2%98-2-1.jpg\" alt=\"V\u00c1LVULA DE BORBOLETA DE VEDA\u00c7\u00c3O SUAVE TIPO WAFER NA LINHA CENTRAL\">\n  <div class=\"hero-content\">\n    <div class=\"hero-title\">V\u00c1LVULA DE BORBOLETA DE VEDA\u00c7\u00c3O SUAVE TIPO WAFER NA LINHA CENTRAL<\/div>\n    <div class=\"hero-description\">\n      As v\u00e1lvulas borboleta s\u00e3o dispositivos de baixo perfil usados em processos industriais. Elas s\u00e3o relativamente finas, o que significa que podem ocupar menos espa\u00e7o em tubula\u00e7\u00f5es do que outros tipos de v\u00e1lvulas.\n    <\/div>\n    <span class=\"hero-link\">Explore Produtos e Solu\u00e7\u00f5es<\/span>\n  <\/div>\n<\/a>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Metal_Seated_vs_Resilient_Seated_Valves_Direct_Comparison\"><\/span>V\u00e1lvulas com Assento Met\u00e1lico vs. V\u00e1lvulas com Assento El\u00e1stico: Compara\u00e7\u00e3o Direta<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"512\" src=\"https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/05\/Metal-Seated-vs.-Resilient-Seated-Valves-Direct-Comparison-1024x512.webp\" alt=\" Um diagrama mostrando a compara\u00e7\u00e3o entre uma v\u00e1lvula borboleta com assento met\u00e1lico e uma com assento resiliente\" class=\"wp-image-15174\" srcset=\"https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/05\/Metal-Seated-vs.-Resilient-Seated-Valves-Direct-Comparison-1024x512.webp 1024w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/05\/Metal-Seated-vs.-Resilient-Seated-Valves-Direct-Comparison-300x150.webp 300w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/05\/Metal-Seated-vs.-Resilient-Seated-Valves-Direct-Comparison-768x384.webp 768w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/05\/Metal-Seated-vs.-Resilient-Seated-Valves-Direct-Comparison-18x9.webp 18w, https:\/\/www.xintaivalves.com\/wp-content\/uploads\/2026\/05\/Metal-Seated-vs.-Resilient-Seated-Valves-Direct-Comparison.webp 1200w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">A tabela abaixo resume as principais diferen\u00e7as entre v\u00e1lvulas com sede met\u00e1lica e sede resiliente em par\u00e2metros de desempenho chave.<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td><strong>Par\u00e2metro<\/strong><\/td><td><strong>Sede Met\u00e1lica<\/strong><\/td><td><strong>Sede Resiliente<\/strong><\/td><\/tr><tr><td><strong>M\u00e9todo de veda\u00e7\u00e3o<\/strong><\/td><td>Contacto metal-metal<\/td><td>Borracha\/elast\u00f3mero na sede met\u00e1lica<\/td><\/tr><tr><td><strong>Desempenho de veda\u00e7\u00e3o<\/strong><\/td><td>Est\u00e1vel; poss\u00edvel fuga m\u00ednima a baixa press\u00e3o<\/td><td>Estanqueidade total; zero fugas<\/td><\/tr><tr><td><strong>Temperatura M\u00e1xima<\/strong><\/td><td>At\u00e9 425\u00b0C (corpo em a\u00e7o carbono)<\/td><td>At\u00e9 80\u00b0C (limite do elast\u00f3mero)<\/td><\/tr><tr><td><strong>Classifica\u00e7\u00e3o de press\u00e3o<\/strong><\/td><td>At\u00e9 5.000 psi \/ Classe 2500<\/td><td>PN6\u2013PN25 (at\u00e9 25 bar)<\/td><\/tr><tr><td><strong>Compatibilidade de m\u00eddia<\/strong><\/td><td>Abrasivos, lamas, vapor, petr\u00f3leo e g\u00e1s, qu\u00edmicos<\/td><td>\u00c1gua limpa, esgoto, qu\u00edmicos suaves<\/td><\/tr><tr><td><strong>Vida \u00fatil<\/strong><\/td><td>Longa dura\u00e7\u00e3o em condi\u00e7\u00f5es adversas<\/td><td>Longa dura\u00e7\u00e3o em servi\u00e7o limpo<\/td><\/tr><tr><td><strong>Manuten\u00e7\u00e3o<\/strong><\/td><td>Complexo \u2013 corpo, sede e cunha reparados em conjunto<\/td><td>Simples \u2013 apenas substitui\u00e7\u00e3o da cunha\/disco<\/td><\/tr><tr><td><strong>Custo Unit\u00e1rio<\/strong><\/td><td>Mais alto<\/td><td>Mais baixo<\/td><\/tr><tr><td><strong>Normas Aplic\u00e1veis<\/strong><\/td><td>API 600, API 602, ISO 10434, ASME B16.34<\/td><td>EN 1074, BS 5163, ISO 7259, AWWA C509<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Conclusion\"><\/span>Conclus\u00e3o<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">As equipas de procurement B2B devem seguir refer\u00eancias t\u00e9cnicas ao escolher entre <strong>com assento met\u00e1lico<\/strong> e com assento resiliente<strong> v\u00e1lvulas<\/strong>. Isso tamb\u00e9m garantir\u00e1 uma instala\u00e7\u00e3o bem-sucedida e reduzir\u00e1 os custos de ciclo de vida.\u00a0<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Antes de encomendar as v\u00e1lvulas, os compradores devem verificar se elas aderem a normas como ASME B16.10 ou EN 558 s\u00e9rie 14\/20. Avalie as <strong>dimens\u00f5es da v\u00e1lvula borboleta de 30\u201d<\/strong> para garantir que a v\u00e1lvula se encaixe no espa\u00e7o de flange dispon\u00edvel na tubula\u00e7\u00e3o existente.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Os engenheiros de projeto tamb\u00e9m devem verificar o <a href=\"https:\/\/www.xintaivalves.com\/pt\/blog\/butterfly-valve\/butterfly-valve-and-actuator-complete-guide\/\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>cat\u00e1logo PDF de v\u00e1lvulas borboleta com assento met\u00e1lico<\/strong><\/a> como refer\u00eancia para comparar as configura\u00e7\u00f5es de disco e assento.\u00a0<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>V\u00e1lvula Xintai<\/strong> fabrica ambos <strong>v\u00e1lvula borboleta com assento el\u00e1stico<\/strong> conjuntos e v\u00e1lvulas gaveta com assento met\u00e1lico que aderem \u00e0s normas ISO 9001, CE e API. Nossa linha de produtos abrange de DN50 a DN1200 com diversas configura\u00e7\u00f5es de assento.\u00a0<\/p>\n\n\n\n<div class=\"wp-block-buttons is-content-justification-center is-layout-flex wp-container-core-buttons-is-layout-fe48e5de wp-block-buttons-is-layout-flex\">\n<div class=\"wp-block-button has-custom-width wp-block-button__width-50\"><a class=\"wp-block-button__link has-white-color has-text-color has-background has-link-color has-medium-font-size has-custom-font-size wp-element-button\" href=\"https:\/\/www.xintaivalves.com\/pt\/contact\/\" style=\"background-color:#b30a15\" target=\"_blank\" rel=\"noreferrer noopener\">Obter Cota\u00e7\u00e3o Gr\u00e1tis<\/a><\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Metal-seated butterfly valves and resilient-seated valves have their own specifications and applications.\u00a0 If you are a B2B buyer wanting to avoid financial losses, make sure that you choose compatible valves for your project.&nbsp;&nbsp; A resilient seated butterfly valve delivers bubble-tight sealing, low operating torque at economical costs in clean water and low-pressure systems.\u00a0 Consequently, a [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":15175,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-15171","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-butterfly-valve"],"_links":{"self":[{"href":"https:\/\/www.xintaivalves.com\/pt\/wp-json\/wp\/v2\/posts\/15171","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.xintaivalves.com\/pt\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.xintaivalves.com\/pt\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.xintaivalves.com\/pt\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.xintaivalves.com\/pt\/wp-json\/wp\/v2\/comments?post=15171"}],"version-history":[{"count":3,"href":"https:\/\/www.xintaivalves.com\/pt\/wp-json\/wp\/v2\/posts\/15171\/revisions"}],"predecessor-version":[{"id":15178,"href":"https:\/\/www.xintaivalves.com\/pt\/wp-json\/wp\/v2\/posts\/15171\/revisions\/15178"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.xintaivalves.com\/pt\/wp-json\/wp\/v2\/media\/15175"}],"wp:attachment":[{"href":"https:\/\/www.xintaivalves.com\/pt\/wp-json\/wp\/v2\/media?parent=15171"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.xintaivalves.com\/pt\/wp-json\/wp\/v2\/categories?post=15171"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.xintaivalves.com\/pt\/wp-json\/wp\/v2\/tags?post=15171"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}